United have looked shaky at the back this season, keeping just two clean sheets, and another defensive lapse saw them fall behind against Romanian minnows CFR Cluj on Tuesday night before they were rescued by Robin Van Persie’s double strike.

And Bosnich believes his former club will keep on shipping goals unless Ferguson stops rotating David De Gea and Anders Lindegaard and allows one of his stoppers to develop an understanding with the defenders in front of them.

“The goalkeeping situation is one they have to sort out very soon,” the retired Aussie keeper told talkSPORT. "We saw it least season, he was swapping Lindegaard and De Gea up until Christmas. This season he is doing the same.

“From a defensive stability point of view, it is imperative you keep playing the same back four and goalkeeper as much as you possibly can. That continuity, that understanding that you develop as a goalkeeper with your defenders, is priceless.

“The sooner he makes the decision, whether it be Lindegaard or De Gea, the better it will be for that defensive unit.”